Bobbin.



J. W. REID! BOBBIN.

MPLICATION FILED MAY}, 1911- Patented Oct. 16, 1917.

INVENTO/fl WITNESS v i W I JoseFh Kala I JNI 'D JOSEPH W. REID, F PATERSON, NEW JERSEY.

BOBBIN.

masses.

Specification of Letters latent.

Patented one. is, far a.

Application filed May 3, 1917. Serial No. 166,077.

To all whom it may concern.

Be it known that I, Josnrrr REID, a

= citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Bobbins, of which the following is a specification.

, In a certain class of bobbins it is exoeed-' ingly desirable that they combine lightness with sufficient strength to withstand any rough usage to which they are likely to be put; this is true especially of bobbins from which the thread or yarn is drawn in a manner involving the rotation of the bobbin in response to the draft on the thread, and

where the thread is so tender that the resistance of the bobbin to rotation is suflicient to cause its breakage.

My invention contemplates providing a bobbin which shall be lighter than bobbins ordinarily used and as strong as, if not stronger than, the same. According to my invention, the barrel is made of tubular paper material and the heads of wood or other suitable material, the ends of the barrel being in-set in the heads, after which the whole is given a liquid surface treatment that not only stifi 'ens up and hardens the paper but on hardening closes u all seams and eradicates all roughness which might otherwise catch the thread, especially the delicate fibers ofsilk, and lead to breakage thereof; this treatment in its preferred form consists in first oiling the surfaces of the barrel and heads, which softens and lays the fibers, and then applying a hardenin liquid coat or coats, as of paint first and shellac afterward, so that the result will be a hard, smooth film distributed, unbroken, over the entire exposed surface of the bobbin.

In the accompanying drawing,

Figure 1 is a side elevation of a bobbin constructed inaccordance with myinven tion and showing the different layers of the coating as I prefer to apply it;

Fig. 2 is a sectional view on the line 2-2 of Fig. 1;

Fig. 3 is a sectional view on the line 3-3 of Fig. 1;

Fig. 4; is anenlarged fragmentary sectional view; and

Fig. 5 shows in longitudinal section a modified form of the bobbin.

a designates the heads of the bobbin, the

same being preferably of wood or some other suitable material that can be turned in a lathe and is suitable for the purpose and each having an inwardly projecting cylindrical boss 6 and a peripheral flange c,

the boss projects inwardly of the flange, the

same as in other bobbin heads which are formed separately from the bobbin barrels, and the outer face of the head is flat. Each head is penetrated by the usual spindle hole (1 The barrel 6 is composed of a suitable length of paper, card-board, straw-board or other substantial material (herein designated 5paper).

Concentric with and concentrically abutting on the periphery of the boss 6 each head is formed at the inner side with a groove 7 the width of which is exactly the I if formed of a thicker and heavier piece of wood, and for laying all roughness and closing up interstices and seams in which the fibers of the silk or other thread might catch, I treat the bobbin thus formed as follows:

I first coat the bobbin all over, or at least as to so much of the surfaces of the barrel and heads as has contact with the thread package, exteriorly with oil, as linseed oil. This has the eflect of not only softening but laying the, fibers of the wood and paper I which might otherwise project, stifi' enough tocatch and hold the fibers of the thread and in'ure the same. Having thus prepared a sur ace which is smooth and without roughnessof any kind on which the thread might catch, I treat the surface so as to make it hard and give stiffness to the barrel, preferably using'material that will more or less impregnate the oiled surface and will set, leaving a hard film coating said surface. To this end, I preferably first apply a paint coat or coats over the oiled coat, and then when that has dried apply a coat of shellac. In Figs. 1 and 4, the oiled coat is indicated at g, Fig. 4 showing the oiled coat as impregnating the surfaces of the barrel and head; the paint coat is indicated by h, appearing as-a broken'line in Fig. 4; and the coat of shellac is indicated by 2', being a solid line in Fig. 4. The result is not only a hard, smooth finish and a coating which extends continuous over the joints between the several parts, but a very ap reciable hardening and stifiening of the arrel, so that although it is made of paper it is in fact appreciably stronger than the barrel would be if composed of a materially thicker bodyof wood, with the very important advantage that the bobbin as a whole is very much lighter than a bobbin composed wholly of wood. I In thelarger sizes of bobbins I may reinforce the middle part of the barrel subv.81 nntially the same as wooden barrels are frequently reinforced. Thus in Fig. 5-, 5'

is a reinforcing disk glue d in the barrel mid-- waybetween the heads and having a central aperture k to admit the spindle.

Having thus fully described my invention what I claim as new and desire to secure by Letters, Patent is A bobbin including a pair of heads of fibrous material forming peripheral flanges on the bobbin and a barrel of fibrous mate rial having its ends jointed and secured to the heads, the bobbin having a coating extending continuous over the several surfaces 'of the heads and barrel and which at its inner side impregnates said-surfaces and is fiber-softening and fiber-laying I and at 7 its outer side is for its whole extent still, hard and smooth;

In testimony whereof I afiX my signature JOSEPH w. REID. 

